Electric fluid-heater.



l. A. PAASCHE.

ELECTRIC FLUID HEATER. APPLICATION FILED OCT. 25.1915- 1,293,896.Patented Feb. 11, 1919.

Q a I v I "I Pla UNITED STATES W8 A 2mm, 63:? CHEGAGiD, ILLL J ".s

PAJZTEEEET Application filed @dcober 2m, fieflsl filed September 23,1915, I have disclosed a.

pneumatic ooeting apparatus in which the air and aiso the coatingmaterial is heetecl before passing to the. air brush.

The objec z of the present invention is to roduce an improved eleetrieheater 18 particularly adapted for use poeumetic coating apparatus Whioh1%? of fectively heat the lal'ge content of m: plied to the air ore-shenfl W51 also s eeve $20 heat the coating material oomet supply tankwhich oomleote to In its more specific ospeofiie fiche Tom refers :50 animproved eonstwct'iom casing for the heater, to "the means mounting orattaching the air tube Size and to the general orrangemene of fixmentsof the heater with a View to 1o L and ease in assembling and toefieoaimmese the result-s desired.

In the accompanying xirewings, Fig 1.1m is a vertical centre seciionthrough en trio heater emboying the featmes of my 311- vent-ion. Fig. 2is a plan view with iilae up per half of he easing removed em? pel isshown in section. Fig;- 3 is e cross seotion in the plane of line 343 ofFig. 1, Eooking in the direction of the arrows.

In the preferred form shown in the drawings, the heater comprises athin, flat casing 5 which is divided in a plane at right angles to itsshortest dimension into two subst-an tially similar half-sections. Lugs6 projecting up from the edges of one or both of t e sections engage theother section to pzevent relative slipping movement when The op'posifeends of the casing; are fem into neck PUEFZiOHfi 7, the line be" tweenthe sections being' along the axis of said neck portions. The twosections are 1- APT nuke S threwi i: po: t; r01

The tube *9 V ink-o e suiioble through the heater is humei member 01*ooiis occupying; eenh poo $10-1 of the 321552 one emls'o'f no weextenfiiug oppos on oiaiozzs 3115i seen how mg a head 10 thereozg whichis mobs ed by I one of the neck portions '1", e outer encss said "neefisprojecting: through the glenrls 8 and being i aemfied for attachment tosuitoeniiuifis fol condtoting air to and from heefiei'. Each head 10 hasan ann groove TU to receive on internal 2 5 Within the p l: "Z so thatwhen the gfian of the coils; in

ewee

the 5921a;

I a oi immv amounts Barrens: to pass through the heater so that of hoe-;may be obaine from the Eotfei', for exampie low. medium Win A of anyoommom or joreierrefi oonsm'oefion is :nouote i n opening 'iowez" waftof the casing (moi fie cong zeoiefii oy Wires 1'? $0 the switch18-whfich is commode-u 1- a: suiteble eowsee of d we.

31 the omen .v so: not only to heat e tube 9. "out :feo V61 which may beplaced a receptacle containing painting fluid to be supplied to'an airbrush. The heating device 13 being located quite close to the top of thecasing will he ample for the latter purpose. v

w T he parts of the heater may be assembled very quickly and easily Theheating device 13, bracket H, and switch 15 need not be secured to thecasing but are held in place a with sufficient security by the coils ofthe tube 9, so that every part out the socket 16 is virtually held inplace by the glands 8.

The foregoing detailed description is not intended a limitation of theinvention to the exact embodiment disclosed. The scope of the inventionis pointed out in the appended claims.

I claim my invention:

1. An electric heater having, in combination, a casing comprising twoshallow complementary half sections, said sections being shaped toprovide projecting neck portions at op; its ends of the casing, a tubefor the fin ,i to be heated having a plurality of co ls wi him saidcasing, the ends of said tube extending in opposite directions andhaving heads fixed thereon which occupy said neck portions of thecasing, nuts threaded on said neck portions to secure the two casing se7118 together, electric heating device w in the casing adjacent to thecoils of said/tube, and means for supplying said heating device withelectric energy.

2. An electric heater having, in combination, a casing comprising twocomplementary sections shaped to provide two projecting neck portions, aconductor for the fluid to be heated located Within said casing andhaving its ends extending into said neck portions, devices engaging saidneck portions for securing the casing sections together, and electricheating means within the casing for heating said conductor.

3. An. electric heater having. in combina tion, a casing formed insections shaped to provide two outlets, a conductor within the casinghaving its ends projecting through. said outlets, means for securing thecasing .c-ctions together at said outlets, the said curls of theconductor being held between the respective sections at said outlets,and electric heat ng means within the casing for heating no conductor. 2

4-. An el tric healer having. in combination, a c shaped to provide twoneckporeion t casing being divided into two sections in. a plane passingsubstantially filyililllff through said neck portions, a coin ductorwithin the casing having: its on s extending into said neck portions,the said ends of the conductor having exterior de pressious thcrein' andthe neck portions havmg internal projections to occupy said depressionsfor securing said ends in place, means for clamping the casing sectionstogether, and electric heating means Within the casing for heating saidconductor.

5. An electric heater having, in combination, a casin r having twooutlets, the casing being divided into two sections on a plane passingsubstantially axially through said outlets, a conductor within thecasing having its ends passing through the outlets, said ends andoutlets having inter-engaging por tions to secure the ends in place,means for securing the casing sections together, and electric heatingmeans within the casing for heating said conductor.

6. An electric heater having, in combination, a casing provided with twoneck ortions, the casing being divided into sections on a plane passinglongitudinally through said neck portions, a conductor within the casinghaving heads on its ends which heads are positioned within said neckportions, the heads having external depressions, and the neck port-ionshaving internal projections engaging said depressions for securing theheads in place, and nuts threaded upon said neck portions for securingthe casing sections together.

7. An electric heater having, in combination, a hollow casing having aflat upper side, a conductor for the fluid to be heated, said conductorbeing suspended between its ends by the casing, said conductor ha ing aplurality of coils, an electric heating device within the casing andsurrounded and sup ported h certain. of said coils, certain other coilsbeing located betweenjthe heating device and the upper wall of thecasing, a. switch and an electric socket, said switch and socket lacingoperatively connected to the heating device and being located upon thelower wall of the casing.

8. An electric heater having, in combination, a casing, an electricheating device therein, a bracket secured to said device, a switch.carried by said bracket and projecting through an opening in saidcasing, connections controlled by said switch for supplying electricpower to said heating device, and a conductor for the fluid to be heatedcoiled about said heating device, the ends of said'conrlucirorprojecting through the casing a nd ecured thereto and adapted forattachment to other conductors for conveyinn; fluid lo and from theheater.

An electric heater casing having projeciions. the casing being composedof sections dividing said projections, and nuts threaded on saidprojections for securing the casing sections together.

10. An cloctric heater having. in combination, a hollow casing, a coiledconductor located within and supported at its ends by

